The Milbank U3499-XL-100 1-Phase 100 Amp Ringless Meter Socket is a surface-mounted electrical box made of galvanized steel with a gray powder coat finish. It is designed for single-phase, 120/240V power distribution with a maximum amperage of 100A. This ringless meter socket, manufactured in the United States by Milbank, features a rectangular box shape and measures 3.75 inches in length, 22 inches in height, and 11 inches in width. It is a reliable and durable option for electrical installations in commercial and industrial settings.